Package org.openhab.core.items

Interface StateChangeListener

All Known Implementing Classes:
GroupItem
@NonNullByDefault public interface StateChangeListener

This interface must be implemented by all classes that want to be notified about changes in the state of an item.

The GenericItem class provides the possibility to register such listeners.

Author:
Kai Kreuzer - Initial contribution

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    stateChanged(Item item, State oldState, State newState)
    This method is called, if a state has changed.
    void
    stateUpdated(Item item, State state)
    This method is called, if a state was updated, but has not changed

  • Method Details

    • stateChanged

      void stateChanged(Item item, State oldState, State newState)
      This method is called, if a state has changed.
      Parameters:
      item - the item whose state has changed
      oldState - the previous state
      newState - the new state

    • stateUpdated

      void stateUpdated(Item item, State state)
      This method is called, if a state was updated, but has not changed
      Parameters:
      item - the item whose state was updated
      state - the current state, same before and after the update